20121031022 has 8 divisors (see below), whose sum is σ = 30883443096. Its totient is φ = 9826549992.

The previous prime is 20121030983. The next prime is 20121031057. The reversal of 20121031022 is 22013012102.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×20121031022³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20121030988 and 20121031006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 116982653 + ... + 116982824.

It is an arithmetic number, because the mean of its divisors is an integer number (3860430387).

Almost surely, 2^20121031022 is an apocalyptic number.

20121031022 is a deficient number, since it is larger than the sum of its proper divisors (10762412074).

20121031022 is a wasteful number, since it uses less digits than its factorization.

20121031022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233965522.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20121031022 its reverse (22013012102), we get a palindrome (42134043124).

It can be divided in two parts, 201210 and 31022, that added together give a palindrome (232232).

The spelling of 20121031022 in words is "twenty billion, one hundred twenty-one million, thirty-one thousand, twenty-two".